A4WP ups Rezence charging specification to 50W

The Alliance for Wireless Power (A4WP) has raised the Rezence wireless power charging standard specification to 50W—extending support to laptops, tablets, and other consumer devices. The release of the corresponding literature and upgrade to the existing Baseline System Specification and certification program is scheduled by the end of the year.

Dell, Fujitsu, Hon Hoi (Foxconn), Lenovo, Logitech and Panasonic have all joined the A4WP with the aim of integrating wireless charging into a wide range of consumer electronics devices. A4WP's membership has now passed 100 mark.

A4WP President Kamil Grajski said: "A4WP member companies are driving the expansion of the Rezence specification to enable new usage models. Extending Rezence to include laptops, tablets and peripherals is a necessary step towards a wire-free and universal charging experience for everyone."

Wireless charging technologies operating at frequencies lower than 6.78MHz are subject to technical limitations that make the move to higher power difficult to implement in a manner acceptable to consumers. While the organisations associated with these technologies are only now discussing the delivery of power in the 10W to 15W range, Rezence technology now delivers wireless power solutions in the 1W to 50W range that support multi-device charging while preserving freedom of placement in horizontal and vertical dimensions for a true drop and go user experience. The Rezence specification also supports wireless charging of multiple devices with differing power requirements on the same charging surface, a feature unique to magnetic resonance technologies.

"The ability to easily wirelessly charge a laptop, smartphone, or accessory marks a powerful shift, untangling us from the wires that have become a part of our everyday lives," said Lenovo CTO Peter Hortensius. "In evaluating the different wireless charging technologies, we determined that the A4WP system operating at 6.78MHz best meets our customers' needs because it delivers the power and convenience necessary to easily charge all your devices."